Dust basket



FIG. 1 is a front elevation of a dust basket showing my new design, the rear side elevation is similar to the front elevation;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevation thereof, the left side elevation is similar to the right side elevation; and

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a dust basket, as shown and described. 